We are getting , new user error

[TimberFloorAu]

When a new user joins, and we then click on that users name. We are receiving a MySql Error

example: http://www.yobromofo.com/forum/members/mclizzie.html

yet http://www.yobromofo.com/forum/membe...erfloorau.html

works fine.

Any suggestions on a fix please, of have we got some more serious issues.

Error report is:

Database error in vBulletin 3.7.2:

Invalid SQL:

			SELECT MAX(dateline) AS lastpost, COUNT(*) AS total
			FROM yobromofusernote AS usernote
			WHERE userid =;

MySQL Error   : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3
Error Number  : 1064